Loom take-up mechanism



Aug. 21, 1923.

G. W. SPALDING LOOM TAKE-UP MECHANISM 3 Shuts-Sheet 1 J72 V672 60 21: Ow. 2am 1 v o tarney 9 m J, u d Q h V i F Aug. 21, 1923. 3,465,693

G. w. SPALDlNG LOOM TAKE-UP MECHANISM Filed June 25 1920 3 Sheets-Shea 2 I Au 21, 1923.

.G. W. SPALDING LOOM TAKE-UP MECHANISM 3 Shuts-Shut 5 Filed June 25, 1920 enema-sa 21, s.

shortens 'SPALDI GQOE woncns'rnn, massjaonnsnr'rs, Assrsnon, BY ivrnsnn nssrenmnnr-s, T0. MILLS BELT warranty, or woncnsrnn, tnssaonusnrrs, A.

.cenronnrron or t/IASSAGHUSETTS.

To all whom z'tmay'cmicern: H I

Be it known that I, GEORGE W. SPALn Ne, a citizen ot the United States, residingat Worcester, in the county of Worcester, State of Massachusetts, have invented a certain new anduseful Improvement in Loom Take- Up Mecha-nisms, of which the following is a specification, reference being had therein to the accompanying drawings. a The invention is intended for application to looms used for producing webs compris- 1 ing a section wherein a given number of warp-threads is interwoven and a succeeding section in which fewer than the whole of such number are interwoven, or vice Versa. Anexample of the webs which my invention is designed to assist inproducing is a web composed of alternatewide sections and narrow sections succeeding one another in the length of the'web, as fOT'lIlStdl'lCG 1n the case of some webs which are employed in the V manufacture of suspenders andbraces.

The general object of the'invention is'to enable a material economy to be effected, and' much of the waste heretofore customary to be avoided, in the case of the warp-threads which are used in weaving the section containing the greater number of warp-threads but are not interwoven in the section contai'ning fewerwarp-threads; for instance the warp-threads'which are employed in weaving the marginal portions of the wide, sections but are not interwoven in the narrowsections. The invention accomplishes such object-by obviating floating of said warptnreads alongside a section in which they are not interwoventhroughout the length of the latter, from the rear end of one wide section to thefront end of the next. The portions of the said warp-threads which thus are floated alongside the sections in which they "are not interwoven require to be trimmed away subsequent to the weaving, the: portions thus trimmed away becoming waste, which entails a considerable loss.

Theinvention is illustrated in a form of embodiment adapted for, use in the pro Loom rann urfivincnnnrsrt I Application meme 25,'192 02= Serial no $91331.

means forsaid main take-up devices wher by the t-aking up actionof the latter is suspended upon the completion of a wide strip and caused to be resumed upon the comple tion of the succeeding narrow strip. Through the operation of themechanism comprising such combination the drawing forward of the warp-threads'which are not used in weaving the narrow strip is suspended during the production of ,such strip, thereby avoiding the formation of long floats and practically eliminating the loss-in waste.

Fig. 1 is an isometric view of the illustrativeembodiment aforesaid of the invention, including certain parts of a loom to which the said embodiment is supposed to be applied.

Fig. 2 is a view in vertical section in a 'planeparallel with the loom sides, showing certain additional parts.

- Fig. 8 is apartly sectional view of the auxiliary take-up devices, and parts assogiated' therewith, looking from the left in 1g. 1. Fig. 4; [is a rear view of the parts shown in Fig. 3, but with the lay omitted. The main take-updevices shown in Figs. 1 and 2 comprise the take-up roll 1, furnished wit-hj'points or teeth for engagement with the web,and also-having combined with it the worm-gear 2; the actuating worm 3, which engages with the said worm-gear, the

upright'worm-shaft 4, the ratchet-wheel 5, V i

Fig. 2-, fixed on the said worm-shaft, and the actuating pawl 6, the operating means for which may be as approved in practice; and the presser roll 7, between which and the take-up roll'l the web passes after extending partly-around the will, the journals 8 of the said presser-roll 7 being confined as usual between the opposite side-portions of guide-pieces 9 attached to the breast-beam 10.

The main take-up devices act as usual during the weavingof a wide portion a of the web'to fe'ed forward the web as fast as the said portion .is woven, and in doing sothey operate to draw forward' from the sources of supply all of the warp-threads which en- I ter into the production of-theweb.

A lay-beam is indicated at 11 in Fig. 2, a reed carried thereby being indicated at 12, and at 13 is the front confining plate at. the top of thereed. i

The auxiliary take-up devices comprise the pair of rolls 14, 14, mounted in bearings in connection withthe stand 15 fixed upon the top of the breast-beam 10. These rolls are located a short distance in front of the clotlrmaking point or fell, and the web as woven passes between them. The rolls 14, 14 are provided with points or teeth to engage with the web, and they are provided with intermeshing gears 16, 16, to cause them to turn in unisontthey are actuated by means of a ratchet-wheel 17 fixed upon the shaft of the lower'roll, a pawl 18, and a swinging pawl-carrier 19 which is hung upon the shaft of thBzlOWGI' roll, and

to which the pawl 18 is pivoted at 29. The pawl 18 is held in engagement with the teeth of the ratchet-wheel 17 by means of a spring 21. The pawl-carrier 19 is furnished with an adjustable contact piece 22 with which the plate 13 engages in the forward stroke of the lay, so-as therebyto actuate the pawl-carrier and the pawl 18,

I so as to rotate the feed-rolls.

Reverse turning movement ofthe feed-rolls is prevented by means of a holding pawl 23, which is pivoted to stand 15 upon a screw 24, and

I held bv a spring 25 in engagement with the teeth of the ratchet-wheel 17.

At 26' is a guide upon the front of the stand 15, to which the web passes from the- -rolls 14, 14, and around which the web changes direction on its way to the main take-up roll 1.

'During the weaving of a wide section a, the main take-up devices act in usual man ner to draw the web forward as fast as it is woven, and at this time the wormshaft 4 is rotated by means of the actuating pawl 6; meanwhile the, auxiliary takeup devices are actuated concurrently with the main takeup devices.

After the completion of the said wide section a, and while the leading portion of the next succeeding narrow portion Z) of web isbeing woven, the main take-up devices continue in action until the rear ends of the opposite side-portions of the wide section a have been drawn forward past the rolls 14, 14.v Thereupon the actuation of the main take-up devices is suspended by means of the pattern-devices of the loom, acting for instance through cord 27, Fig. 3, to lift pawl 6 out of engagement with ratchetwheel 5. Thereby the feeding forward of the wide section a, and of the warp-threads extending rearward from its rear end at -the opposite sides of the narrow section b is suspended, but the actuation of the rolls 14, 14, by means of the described devices continues. Consequently the feeding forward of the narrow section Z2 continues, the

portion'ofthe narrow strip serves to cause the latter to be taken up, but thef'said teeth move through-the unwoven warp-threads at; the sides of such section withoutfadvancing such threads; Upon the completion of the required length of narrow strip Z), the pattern-devices bring about re-engageinent of pawl (Swith ratchet-wheel 5, and the actuQ ationof the main take-up. devices is resumed while the next WlClQ section of web is bemg woven. i

What is claimed as the invention is,'

1. In loom mechanism for weaving a Web her of warp-threads is interwoven, or vice;

VQ1'SEt,.'tl1e combination with main take-up devices which are operative to effect the taking up the web during the "weaving of the former section, of auxiliary take-up deduring the weaving of the succeeding secvices including a roll having teeth which tion pass idly between the non-woven warp- 7 threads and act totake up only'the woven material of such section, and controlling means for the main take-up devices where:

by the taking-up action of the main take up devices is suspendedupon the completion of a section containing the full number ,of warp-threads and caused to be resumed upon the completion ofthe succeeding section 0011- taining fewer warp-threads.

2. In loom mechanism for weaving a web a composed of wide and narrow web-sections alternately succeeding one another, the combination with main take-up devices which are operative to effect the taking-up ofthe web during the weaving of the wide sections, of auxiliary take-up devices which are operative to takeup the succeedingnarrow section alone, comprising a pair of toothed takeup rolls arranged close tothe cloth making point or fell, and means for actuating said rolls, and controlling, means for said main take-up devices whereby the taking-up action of the latter issuspended upon the completion of a wide section and caused to be resumed upon the completion 115 In testimony whereof I afiix my signature of the succeeding narrow section.

in presence of two witnesses. V

GEORGE W. SPALDING. V

Witnesses: i Y

A. Lonnrra liLlATTEMORE, Anion M. TisDALE. 

